<template>
  <div>
    <h1>{{id ? '编辑' : '新建'}}分类</h1>
    <el-form label-width="120px"  @submit.native.prevent="save">
      <el-form-item label="分类">
        <el-select v-model="model.parent" placeholder="请选择" clearable>
          <el-option
            v-for="item in parents"
            :key="item._id"
            :label="item.name"
            :value="item._id"
            >
          </el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="名称">
        <el-input v-model="model.name"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" native-type="submit">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  props: ['id'],
  data () {
    return {
      model: {},
      parents: []
    }
  },
  methods: {
    async save () {
      if (this.id) {
        await this.$http.put(`/rest/categories/${this.id}`, this.model)
      } else {
        await this.$http.post('/rest/categories', this.model)
      }
      this.$router.push('/categories/list')
      this.$message({
        message: '保存成功',
        type: 'success'
      })
    },
    async fetch () {
      const res = await this.$http.get(`/rest/categories/${this.id}`)
      this.model = res.data
    },
    async fetchParents () {
      const res = await this.$http.get('/rest/categories')
      this.parents = res.data
    },
    async getParents () {
      const url = 'rest/category/category/subList'
      const res = await this.$http.get(url)
      const { code, data } = res.data
      if (code === 1) {
        this.parents = data
      }
    }
  },
  created () {
    // console.log(this.id)
    this.id && this.fetch()
    this.fetchParents()
    this.getParents()
  }
}
</script>
